DDT, DDD, and DDE in soil of Xiangfen County, China: Residues, sources, spatial distribution, and health risks

被引：50

作者：

Ma, Jin ^{[1
]}

Pan, Li-bo ^{[1
]}

Yang, Xiao-yang ^{[1
]}

Liu, Xiao-ling ^{[1
]}

Tao, Shi-yang ^{[1
]}

Zhao, Long ^{[1
]}

Qin, Xiao-peng ^{[1
]}

Sun, Zai-jin ^{[1
]}

Hou, Hong ^{[1
]}

Zhou, Yong-zhang ^{[2
]}

机构：

[1] Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China

[2] Sun Yat Sen Univ, Ctr Earth Environm & Resources, Guangzhou 510275, Guangdong, Peoples R China

来源：

CHEMOSPHERE | 2016年 / 163卷

关键词：

DDT; Dicofol; Degradation; Ratio DDT/DDE; Health risk; ORGANOCHLORINE PESTICIDES; TAIHU LAKE; CONTAMINATION; PROVINCE; PAKISTAN; DICOFOL; POPS; AIR;

D O I：

10.1016/j.chemosphere.2016.08.050

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

We collected and analyzed 128 surface soil samples from Xiangfen County for dichlorodiphenyltrichloroethane (DDT), dichlorodiphenyldichloroethane (DDD), and dichlorodiphenyldichloroethylene (DDE). Total DDT concentrations (DDTs; sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT) ranged from ND to 427.81 ng g(-1) (dry weight, dw), with a mean of 40.26 ng g(-1) (dw). Among the three compounds, NIDDD was the most dominant. The DDTs in Xiangfen County soils mainly originated from historical DDT use, but there were also new inputs likely related to dicofol use. The DDTs in Xiangfen County soils were mainly degraded under anaerobic conditions, and direct degradation to DDD was the main degradation route. Regions with relatively high concentrations of DDTs were mainly located in North and South Xiangfen County. In these regions, many soil samples contained p,p'-DDT as the predominant pollutant, suggestive of extensive new inputs of DDT. A health risk assessment revealed that there are no serious long-term health impacts of exposure to DDTs in soil, for adults or children. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：578 / 583

页数：6

共 24 条

[1] Organochlorine pesticides in surface soils from obsolete pesticide dumping ground in Hyderabad City, Pakistan: Contamination levels and their potential for air-soil exchange [J].